ICE3BS02L Datasheet, PDF (17/21 Pages) Infineon Technologies AG – Off-Line SMPS Current Mode Controller with integrated 500V Startup Cell and Latched off Mode

F3
ICE3BS02L
Electrical Characteristics
4.3.3
PWM Section
Parameter
Symbol
Fixed Oscillator Frequency
Max. Duty Cycle
f_OSC1
f_OSC2
D_max
Min. Duty Cycle
D_min
PWM-OP Gain
A_V
Voltage Ramp Max Level
V_Max-Ramp
V_FB Operating Range Min Level V_FBmin
V_FB Operating Range Max level V_FBmax
FB Pull-Up Resistor
R_FB
SoftS Pull-Up Resistor
R_SoftS
Limit Values
Unit
min. typ.
max.
61
67
73
kHz
63
67
71
kHz
0.67
0.72
0.77
0
-
-
3.5
3.7
3.9
-
0.85
-
V
0.3
0.7
-
V
-
-
4.75
V
16
20
27
kΩ
39
50
62
kΩ
Test Condition
T_j = 25°C
V_FB < 0.3V
CS=1V, limited by
Comparator C4¹⁾
1) _{The parameter is not subjected to production test - verified by design/characterization}
4.3.4
Control Unit
Parameter
Deactivation Level for SoftS
Comparator C7 by C2
Clamped V_SoftS Voltage during
Normal Operating Mode
Activation Limit of
Comparator C3
SoftS Startup Current
Symbol
V_SoftSC2
Limit Values
min. typ.
max.
3.85
4.00
4.15
V_SoftSclmp 4.23
4.40
4.57
V_SoftSC3
5.20
5.40
5.60
I_SoftSstart
-
1.3
-
Unit
V
V
V
mA
Over Load & Open Loop Detection V_FBC4
Limit for Comparator C4
4.62
4.80
4.98
V
Active Burst Mode Level for
Comparator C5
V_FBC5
1.23
1.30
1.37
V
Active Burst Mode Level for
Comparator C6a
V_FBC6a
3.85
4.00
4.15
V
Active Burst Mode Level for
Comparator C6b
V_FBC6b
3.25
3.40
3.55
V
Test Condition
V_FB > 5V
V_FB = 4V
V_FB > 5V
V_SoftS = 0V
V_SoftS > 5.6V
V_SoftS > 5.6V
After Active Burst Mode
is entered
After Active Burst Mode
is entered
Version 1.1
17
28 Sep 2005